Pulp machine



J' C- LOWE PULP MACHINE y l Filed May 27 1941 2 Sher-:ts-Sh`eelt l March 14, 1944.

' Filed May 27, 1941 J. C. LOWE PULP MACHINE 2 Sheets-Sheet E] @Mm A Home] Patented Mar. i4, i944 .lohn C. Lowe, Quakertown, Pa., assig'nor of one-y halr to Hai-mer B. lLutz, Borough of Sellersville, liza.

' application' may 27, i941, serian No. 395,457

Giaims.

The present invention relates to new and useful improvements in machines for treating paper pulp for use in the paper making industry, and embodies means for oppositely rotating a pair of perforated drums in which the pulp is fed to cause a circulation of the stock through the pair of drums for efficiently agitating the same while the stock is being subjected to the chemical solution or other uid utilized for the treating ci the pulp.

A further object is to provide a machine'of this character of simple and practicall construction, which is efcient andy reliable in performance, relatively inexpensive to manufacture and maintain in operation, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside i n the details of construction and operation as more fully hereinafter described and claimed, reference :being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which Figure 1 is a side elevational view.

Figure 2 is a transverse sectional View taken substantially on a line 2 2 of Figure 1.

Figure 3 is a longitudinal sectional view, and

Figure 4 is a top plan view.

Referring now to the drawings in detail, Wherel in for the purpose of illustration I have disclosed l a preferred embodiment of the invention, the numeral e designates a cylindrical casing formed `of upper and lower longitudinal sections 6 and 1 having flanges 8 around the abutting edges thereof for connection by bolts 9. A bearing Hl is secured in each end of the casing in which a shaft il is journalled, eachof the shafts having its inner end secured to the end wall l2 of a perforated drum i3.

As will be apparent from an inspection of Figure 3 of the drawings, one of the drums I3 is positioned in each end of the casing, and the-adjacent ends of thedrums are spaced apart and open to provide free circulation of thepaper pulp or stock when the same is fed through the hopper le projecting Vupwardly through the top section B of the casing. Y

Secured to the inner surface of each of the drums i3 by bolts I3' is a foraminous or screen lining'li, the adjacent ends of each screen likewise being spaced apart and open, to the inner surface of each screen are a plurality of longitudinally extending agitators I6 of angle construction as shown in Figure 2 of the drawings with one flange of the agitator projecting radially and formed with teeth I1. Prefer- 20 drums, the sealing and secured ably four ofthe agitators are provided in each of the screens l and spaced substantially equi' distantly from. each other circumferentially in the screen.

5 The end wall i2 of each drum is spaced from the adjacent end wall of the casing and the sides of the drums .i3 are spaced circumferentially in the casing to provide a chamber i8 surrounding the outer end and side walls of the drum. The

'1a chambers it are closed adjacent the inner ends of the drums by means of a sealing ring construction which includes a sectional ring member 20. secured to the upper and lower sections of the casing and having a ilange 2| on the inner periphery thereofl engaged at its side. edge by a ange 22 formed on the outer periphery of a ring member 23 secured on the outer periphery of the drum i3. Accordingly, the stock may enter the'hopper it forfeeding the same into the open ends of the members i9 excluding the stock from the chambers I8 at each end of the casing. A

' A discharge pipe 26 is connected to the lower section 1 of the casing at a point between the ad- 25 jacent ends of the drums. the pipe 24 having a conventional form of valve 2B' therein.

25 projectV inwardly from each end of the casing having perforations 26 at the inner ends of the pipes for supplying the 30 chambers i8 with water,A chemical, or other desiredvliquid furthe treatment of the pulp and drain pipes 21 are connected to the Ibottom portion of the lower section the chambers I8. A steam feed pipe 28 may also be attached to the end wall of the upper section 6 of the casing for regulating the temperature of the mix in the casing.

Suitable drive means are provided for cachotl the shafts li of the respective drums for rotating the same in opposite directions as indicated by the arrows in Figure 3.0i the drawings, the op'- posite rotation of thel drums causing a circulation of the stock longitudinally in the drums from one drum to the other.

It is believed the details of construction and manner of operation of the device will be readily understood from the foregoing without further detailed explanation.

Having thus ldescribed my invention, what is claimed as new is:

1. A paper pulp machine vcomprising an imperiorate cylindrical casing and a pair of perforatedrums rotatably mounted in the casing in longitudinally spaced relation to each other, said 'drums being open at their adjacent ends and 1 communicating with oppositely rotated for 'causing a circulation oi.'

the mix in the drmns fromI one to the other through the open ends thereof.

2. A paper pulp machine comprising an imperforate cylindrical casing, a pair of perforate drums rotatably mounted in the casing in longitudinally spaced relation to each. other, said drums being open at their adjacent'ends to aiord free communication with `each other and said drums being spaced concentrically from the walls drums rotatably mounted inthe casing in longitudinalhr 'spaced relation to eachother, said drums ,being open at their adjacent ends and spaced concentrically from the walls oi' the casing, and means for sealing the sides of the drums at their adjacent ends to the walls of the casing to retain paper pulp stock in the drums, said drums being oppositely rotated for causing a circulation ofthe stock from one drum to the other through the open elids thereof. 1

4. A paper pulp machine comprising an imperforat'e cylindrical casing. a pair of periorate drums rotatablyumounted in .the casing in longitudinally spaced relation to 'each other, said drums being open at their adjacent ends to alford free communication with each other and spaced concentrically from the means for feeding stock to the drums through a wall of the casing; means for sealing the sides of the drums at their adjacent ends to the walls of f Y the casing to retain paper pulp stock in the drums wallsv of the casing,`

drums rotatably mounted in .the casing in longs 'tudinally spaced relationl to each other, said drums being open at their adjacent ends to aiiord free communication with each other and spaced concentrlcally from the walls ,off the casing..

means for feeding stock to the drums through drums. means4 for supplying liquid to the casing,

said liquid being adapted to enter the `drums through the perforations therein for treating the stock in the drums. and means for discharging and means for discharging the stock trom the drums through a .wall of the casing.

5. A paper pulp .machinecomprising an imperforate cylindrical casing. a pair of perforate drums rotatably mounted the stock directly from'the f .6..A paper pulp machine comprising an imperforate cylindrical casing, a pair of periorate in the casing in longlf tudinally spaced relation to each other, said drums being open at their adjacent ends and spaced concentrlcally from the 'walls oi the casing, agitators in the drums, and for sealing the sides of the drums at their adjacent ends or the walls of the casing to retain paper pulp stock in the drums, said drums being oppositely o rotated for causing a circulation loi' the stock from one drum to the other through the open ends thereof.

7. A paper lpulp machinev comprising an imperiorate cylindrical casing, a pair o! perforate drumsv rotatably mounted in the casing in. longitudinally spaced relation to each other, said drums being open at their adjacent ends and spaced concentrlcally from the walls of the casi'ng, a foraminous lining in each drum, agitators -ln the drums, and means for sealing the sides of the drums at their adjacent ends to the walls of the casing to retain paper pulp stock in the drums, said drums being oppositely rotated for causing a circulation of the stock from one druml open ends thereof.

to the other through the r- JOHN C. LOWE. 

